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Method for preparing anti-flaming banana fiber epoxy resin composite material

A technology of banana fiber and epoxy resin, which is applied in the field of preparation of flame-retardant banana fiber epoxy resin composite materials, can solve problems such as black smoke, high temperature, and high heat, and achieve low product cost, light weight, and machinability good performance

Inactive Publication Date: 2008-09-10
GUANGXI TEACHERS EDUCATION UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, most of the high polymer materials currently produced and used are combustible, and the heat generated during combustion is high, the temperature is high, and black smoke is easy to be emitted due to incomplete combustion, and the following products such as hydrogen chloride, hydrogen cyanide, Toxic and corrosive gases such as hydrogen fluoride and styrene have brought many new problems to the work of escape, lifesaving and fire fighting

Method used

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  • Method for preparing anti-flaming banana fiber epoxy resin composite material
  • Method for preparing anti-flaming banana fiber epoxy resin composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042]Cut the banana fiber treated with coupling agent A-174 to a length of 5mm, and put it in a vacuum drying oven at 70°C for 1 hour; the test was divided into six groups, each group containing 100g of epoxy resin E-44 , low molecular weight polyamide resin 650 (100g), acetone 12.5g, dibutyl phthalate 5g, curing accelerator 1,2-dimethylimidazole 0.5g, mix uniformly; Divided into six groups, the banana fiber content of each group is respectively 0% of the mass sum of the banana fiber, epoxy resin, low molecular weight polyamide resin, acetone, dibutyl phthalate, and 1,2-dimethylimidazole . The banana fiber is mixed evenly with an electric strong mixer, and each group of mixtures is injected into the mold separately, and hot-pressed and solidified on a flat vulcanizing machine. The hot-pressing temperature is 120°C, the hot-pressing time is 5min, and the pressure is 10MPa. . Post-treatment was carried out by heating at a constant temperature of 70° C. in a drying oven for 5 ...

Embodiment 2

[0047] The method is the same as Example 1, except that the lengths of the added fibers are 3mm, 5mm, 10mm, 20mm, 30mm, 40mm, etc., and the content is 10%, that is, the quality of the added fibers is 24.18g, and they are hot-pressed and solidified on a flat vulcanizing machine. , the hot-pressing temperature is 130°C, the hot-pressing time is 3min, the pressure is 10MPa, and then the sheet is cooled. Post-treatment was carried out by heating at a constant temperature of 70° C. in a drying oven for 5 hours. Each sample was tested 5 times, and the specific mechanical properties are shown in Table 2.

[0048] Table 2 Mechanical properties of banana fiber epoxy resin composites with different fiber lengths (10% content)

[0049]

[0050] It can be seen from Table 2 that the mechanical properties of the composite material are the best when the length of the banana fiber is about 30mm.

Embodiment 3

[0052] Weigh epoxy resin E-44 (100g), low molecular weight polyamide resin 650 (100g), TBA is 30g, Sb 2 o 3 10g, acetone 11g, dibutyl phthalate 6.5g, accelerator 1,2-dimethylimidazole 0.8g, add 30% (110.43g) of the fiber after coupling and flame retardant treatment to the total mass . It is formed by hot-pressing and solidifying on a flat vulcanizing machine. The hot-pressing temperature is 120° C., the hot-pressing time is 6 minutes, and the pressure is 10 MPa, and then the sheet is cooled. Post-treatment was carried out by heating at a constant temperature of 70° C. in a drying oven for 5 hours. All the other steps are the same as in Example 1. The sample was tested 5 times according to the standard, and the specific mechanical properties and flame retardant properties are shown in Table 3.

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Abstract

A fire-retardation banana fiber epoxy resin composite material comprises the following components in weight percent: 30 percent of modified fire-retardation banana fiber, epoxy resin of 25 to 35 percent, curing agent of 25 to 35 percent, fire retardant of 5 to 15 percent, diluent agent of 3 to 5 percent, toughening agent of 1 to 3 percent and curing accelerating agent of 0.2 to 0.3 percent. The preparation of the composite material comprises the following steps that: a common method is adopted to extract banana fiber; after the coupling modification and the fire retarding treatment of the banana fiber are completed, raw materials are mixed evenly according to a formula; and finally, hot pressing, curing and forming are completed to obtain the material. The fire-retardation banana fiber epoxy resin composite material solves the problems of the compatibility and the fire retarding treatment between banana fiber and epoxy resin, thereby realizing the comprehensive application of banana stems and banana leaves as well as the treatment of agricultural wastes; meanwhile, the prepared composite material not only has the physical appearance of natural wood, but also has light mass, corrosion prevention, moisture prevention, insect prevention, fire prevention, high dimensional stability and excellent workability performance; moreover, the composite material can be recycled along with low product cost.

Description

technical field [0001] The invention relates to a preparation method of flame-retardant banana fiber epoxy resin composite material. Background technique [0002] Natural fiber composite material is a new type of composite material made of natural fiber (hemp fiber, wood fiber, etc.) and thermoplastic resin or thermosetting resin matrix, which is a green and environmentally friendly material. It has the advantages of low density, good sound insulation effect, good performance, low price, good human affinity, and degradability. It is widely used in construction, daily consumer goods packaging materials and other fields. Research and development of high-performance natural fiber composite materials And its application has become a research hotspot in various countries. According to literature reports, composite materials made of natural fibers such as sisal fiber, flax fiber, bamboo fiber, wood fiber and thermoplastic or thermosetting resin matrix such as phenolic resin and u...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L63/00C08L1/02C08K5/00C08K13/02C08J5/06
Inventor 莫羡忠庞锦英王荣华唐忠平莫小翠梁艺
Owner GUANGXI TEACHERS EDUCATION UNIV
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